Today the Exchange Team released Rollup 2 for Exchange Server 2010 Service Pack 2 (KB2661854). This update raises Exchange 2010 version number to 14.2.298.4.

Here’s the list of changes included in this rollup:

• 2519806  A meeting request that is sent by an external user or by using a non-Microsoft email system is stamped as Busy instead of Tentative in an Exchange Server 2010 environment
• 2556766  Slow performance when you create many contacts by using Exchange Web Services in an Exchange Server 2010 environment
• 2592398  Email messages in the Sent Items folder have the same PR_INTERNET_MESSAGE_ID property in an Exchange Server 2010 environment
• 2601301  Customized contact objects revert to the default form after a public folder database replication in an Exchange Server 2010 environment
• 2625450  You cannot generate an OAB file that is larger than 2GB in an Exchange Server 2010 environment
• 2630808  A user can log on to a mailbox by using Outlook for Mac 2011 unexpectedly in an Exchange Server 2010 environment
• 2632201  MAPI_E_INVALID_PARAMETER errors occur when a MAPI application receives notifications in an Exchange Server 2010 environment
• 2635223  A hidden user is still displayed in the Organization information of Address Book in OWA in an Exchange Server 2010 environment
• 2636387  Event ID 3022 is logged and you cannot replicate a public folder from one Exchange Server 2010 server to another
• 2636883  Returned message items can disappear from the search results view when you use Outlook in online mode in an Exchange Server 2010 environment
• 2641249  Error message when you use the “Folder.Bind” method in an Exchange Server 2010 environment
• 2641753  An email message from an Exchange Server 2003 user is forwarded incorrectly to an external recipient of an Exchange Server 2010 user mailbox
• 2644144  A read receipt is not sent when a receiver does not expand a conversation to preview the message by using OWA in an Exchange Server 2010 environment
• 2644920  The Get-FederatedDomainProof cmdlet fails in an Exchange Server 2010 SP1 environment
• 2645587  An external email message is not delivered to mail-enabled public folders and you do not receive NDR messages in an Exchange Server 2010 environment
• 2649499  Updates for a meeting request are sent to all attendees directly in an Exchange Server 2010 environment
• 2649679  Text in tables is displayed incorrectly in the Conversation view in Outlook Web App in an Exchange Server 2010 environment
• 2652730  You encounter failures when you run the Test-EcpConnectivity cmdlet to test Exchange Control Panel connectivity in an Exchange Server 2010 environment
• 2657103  CPU resources are used up when you use the Set-MailboxMessageConfiguration cmdlet in an Exchange Server 2010 environment
• 2660178  “More than one mailbox has the same e-mail address” error message when you try to manage a mailbox in a tenant organization in an Exchange Server 2010 SP1 Hosting mode environment
• 2661277  An ActiveSync user cannot access a mailbox in an Exchange Server 2010 forest
• 2661294  An email address policy does not generate the email addresses of recipients correctly in an Exchange Server 2010 environment
• 2663581  OK button is not displayed when you change your password in Outlook Web App by using Firefox in an Exchange Server 2010 environment
• 2664365  Certain MailboxStatistics properties are not updated when a user uses a POP3 or IMAP4 client to access a mailbox in an Exchange 2010 environment
• 2664761  DPM protection agent service may stop responding on Exchange Server 2010 servers that are protected by System Center DPM 2010
• 2665806  Error message when you open an RTF email message that has inline attachments in an Exchange Server 2010 environment
• 2672225  A user in a trusted account forest cannot use the EMC to manage an Exchange Server 2010 SP2 server
• 2673087   Error message when you try to copy the Inbox folder to another folder in Outlook in online mode in an Exchange Server 2010 environment
• 2677847  The Microsoft Exchange File Distribution service consumes large amounts of memory in an Exchange Server 2010 environment
• 2678361  The user-agent information about an Exchange ActiveSync device is not updated in an Exchange Server 2010 environment
• 2678414  The display name of a contact in address book is empty in an Exchange Server 2010 environment
• 2681464  An EWS application crashes when it calls the GetStreamingEvents operation in an Exchange Server 2010 environment
• 2685996  Error message when a user who does not have a mailbox tries to move or delete an item that is in a shared mailbox by using Outlook Web App Premium
• 2688667  W3wp.exe consumes excessive CPU resources on Exchange Server 2010 Client Access servers when users open recurring calendar items in mailboxes by using Outlook Web App or EWS
• 2693078  EdgeTransport.exe process crashes in an Exchange Server 2010 environment
• 2694280  Whatif switch does not work in the Set-MoveRequest or Resume-MoveRequest cmdlet in an Exchange Server 2010 environment
• 2694289  Resource mailbox does not forward meeting request to delegates after one of the delegates’ mailbox is disabled in an Exchange Server 2010 environment
• 2694414  The update tracking information option does not work in an Exchange Server 2010 environment
• 2694473  File name of a saved attachment is incorrect when you use OWA in Firefox 8 in an Exchange Server 2010 environment
• 2694474  Incorrect delivery report when you send an email message to a recipient who has configured an external forwarding address in an Exchange Server 2010 environment
• 2696857  EdgeTransport.exe process crashes without sending an NDR message when you send a message to a distribution group in an Exchange Server 2010 environment
• 2696905  Day of the week is not localized in MailTips in Outlook Web App in an Exchange Server 2010 environment
• 2696913  You cannot log on to Outlook Web App when a proxy is set up in an Exchange Server 2010 environment

When running ForeFront Protection for Exchange, make sure you disable ForeFront before installing the rollup and re-enable it afterwards, otherwise the Information Store and Transport services may not start. You can disable ForeFront using fscutility /disable and enable it using the fscutility /enable command.

Note that update rollups are cumulative, i.e. they contain fixes released in earlier update rollups for the same product level (RTM, SP). This means you don’t need to install previous update rollups during a fresh installation but can start with the latest rollup.

You can download Exchange 2010 SP2 Rollup 2 here.